Electrospinning is a technique used to create very fine fibers from a liquid solution. In this process, a high voltage is applied to a droplet of polymer solution, causing it to stretch and form a thin jet. As the jet travels through the air, the solvent evaporates, leaving behind a solid fiber. These fibers can be as small as a few nanometers in diameter, making them incredibly lightweight and versatile. The resulting fibers can be collected on a surface to form a nonwoven mat, which has many applications. Electrospun materials are used in areas like medicine for drug delivery, in filtration systems, and even in textiles for creating strong, lightweight fabrics.